Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f403ae07652bd7f…

MALICIOUS

PDF

217.8 KB Created: 2021-04-26 06:04:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 9c52fd25dbbb89b94ae8ba0a13030b5b SHA-1: c6cae5f0e89b8c17102c70bf08e69d1702a3d0f9 SHA-256: 8f403ae07652bd7ff10917e2d718fb423dff1cc524578a7c532e2c66870553f8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pelibifir.ru/strik?utm_term=general+theory+of+relativity+explain PDF link annotation
    • https://cdn.sqhk.co/pigalixow/bhh4id8/google_drive_photos.pdfIn PDF document text
    • http://kupimaxi.sportsontheweb.net/21471260337.pdfIn PDF document text
    • https://cdn.sqhk.co/deloreba/heigNgf/alita_battle_angel_movie_trailer_download.pdfIn PDF document text
    • http://pakizimavom.scienceontheweb.net/adjectives_list_english_spanish.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/wemabepaguzakusaw.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/hcDJm5v/30765736864.pdfIn PDF document text
    • http://vawadofofasip.getenjoyment.net/gitisabijidusuripibekuka.pdfIn PDF document text
    • http://worozoxiw.sportsontheweb.net/94820897578.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzokikili/icMqgc0/space_frontier_2_mod_apk_android_1.pdfIn PDF document text
    • http://vivekawiga.sportsontheweb.net/nalege.pdfIn PDF document text
    • https://cdn.sqhk.co/bopibege/ehfgh6N/86130688698.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/26aa93d1-52a3-44bc-b44a-7a808e33c41f/xakijexisuvipes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dad0589-80a0-45bb-b34e-8188fd04dfa7/elite_fitness_inversion_table_9600.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c6134bc-b4ee-4186-a35b-03dd63fc53f2/67460900748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7662d81a-233e-4a48-ad3e-8203a814e952/17949218476.pdfIn PDF document text
    • http://tipipigi.atwebpages.com/lijikirotimunonegikawulo.pdfIn PDF document text
    • http://gumizaxewa.atwebpages.com/22111445410.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34cfee28-084f-4793-9418-6985e1fb2067/how_to_charge_ps3_controller_from_wall.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9941916-e4d1-435c-9a5a-102d13336cf4/a_peoples_history_of_the_world_chapter_summaries.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fec28d1-47d7-4826-9a36-92a8fb789a04/esio_trot_film_wiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4436a609-26ee-45dc-b83b-e86dc6d17ade/65185260492.pdfIn PDF document text
    • http://luxupovokajaf.onlinewebshop.net/fanebukowitamosapilik.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002fc0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC0A 5072 bytes
SHA-256: b5b220a6f18fc7a2b469ea64310c4fd23e295adf7247506eb41ad69efaac3534
font_01_sfnt_off00030d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D58 18016 bytes
SHA-256: 8c63757d03aedbba071437dac9aa8e3522c20f25f61ba88a1f7961ebb0912c4f
font_02_sfnt_off000343dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x343DC 16060 bytes
SHA-256: 2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90

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